I just discovered a really nice site Hiss And A Roar that is a little of both. These are the kinds of sounds most people who don't work on films with budgets never get to use. These are recorded by a pro for his use and he also is making them available to the public. This is the kind of foundation sounds that get used all the time to "layer up" tracks in the post world. And are the building blocks if your "designing" sounds for something. You won't find a few thousand cuts of vegetables being tortured in Sound Ideas libraries because folks would ask "why would I need that?". I on the other hand start looking for my check book. I have recorded a fair amount of vegetable violence but it's really messy so one usually limits the amount you do because of the amount of cleanup afterword. So it's great to be able to get it with out the mess. You won't find any "Dinosaur Roars" or "Car Crashes" or other silly stuff.
Right now he has four collections, Fireworks, Seal Vocals, whooshes, and vegetable mutilation. They are sold at higher sample rates and lower sample rates. The lower sample rates generally have fewer sounds. The prices range from $49 down to free. There is a also a $99 version of the Fireworks with multiple tracks and positions of the same sounds and at 196/24. But you can get a sampler of each collection that is free and it's at 44.1/16 not some wanky MP3 file. I downloaded all the free ones and will be upgrading as the budget allows.